Part 4 with 10 more producers. We covered 40 producers so far.
Playlist with every parts : https://www.youtube.com/playlist?list=PLMfwLqrRZypTc0q_sP4MYaGGlooajt4bC
0:00 mikitoP
1st song : Confession http://www.nicovideo.jp/watch/sm9969676
Most popular : ROKI https://youtu.be/Xg-qfsKN2_E
Most recent : Jam. https://youtu.be/vPi09pjnAac
1:15 Kairiki bear
1st song : Wakare no Oto. https://youtu.be/Xmx0L-Gu0w8
Oldest official upload : Pudding Annihilation http://www.nicovideo.jp/watch/sm15416634
Most popular : Venom https://youtu.be/oRJBwaZ59fQ
Most recent : Bug https://youtu.be/FkO8ub83wss
3:24 Sasakure.UK
1st song : PICO@LUV (Song for ☆彡 and ♥ and AI.) http://www.nicovideo.jp/watch/sm1885027
Most popular : Tondemo-Wonderz https://youtu.be/dBQg24mx45Y
Most recent new song : FUTURE EVE https://youtu.be/7j0mQH0BtEU
Most recent work : Lost and Found (Band Remaster ver.) https://youtu.be/aJxGc2LRvIo
5:28 Toa
1st song : *kiseki* http://www.nicovideo.jp/watch/sm20138814
Most popular : Patchwork Staccato https://youtu.be/p2Irc9NPCtk
2nd most recent : Not For Me https://youtu.be/VeolnYYGvdA
Most recent : Reset https://youtu.be/skuMdQ2frx8
8:02 mothy
1st song : 10-minute Love http://www.nicovideo.jp/watch/sm2457253
Most popular : Servant of Evil https://youtu.be/yzpNpaS0uLc
Most recent : Waltz of Those Left Behind https://youtu.be/jNBRyo54Tks
9:31 Hitoshizuku×Yama△
Hitoshizuku's first song : Yamato Nadeshiko http://www.nicovideo.jp/watch/nm4038706
Yama△'s first song : Duplicator http://www.nicovideo.jp/watch/sm9088740
Hitoshizuku×Yama△'s first song : Karakuri卍Burst https://youtu.be/LrVh8ken6D4
Most popular : Bad ∞ End ∞ Night https://youtu.be/WDUA7z3703g
Most recent : Cinderella Wars https://youtu.be/-dFQ_m66K4o
12:17 umetora
1st song : Sen https://www.nicovideo.jp/watch/sm14546089
1st song after changing name : Wholeheartedly http://www.nicovideo.jp/watch/sm17141425
Most popular : Ifuudoudou https://youtu.be/xGNQOqtGU_E
Most recent : L愛KE https://youtu.be/dy0X0pVrgSY
14:06 Yakatora
Oldest song available : Bloom Lonely https://www.bilibili.com/video/av41499555
Oldest official upload : Yokubou Hysteric https://youtu.be/elabxhcn130
1st song after changing name : Yokubou Paradise https://youtu.be/ZTuvIJyQjqM
Most popular : Sugary End https://youtu.be/FJ2cSWqsiJE
Most recent : Trick Rose https://youtu.be/EcFBXfgd_O8
16:37 nejishiki
1st song : Night of the Sixth Star https://youtu.be/I99OdgX3S6o
Most popular : Freedom Lolita https://youtu.be/teSQphExzBU
Most recent : Sudden Death Venus https://youtu.be/7XeZtqSoxOs
18:06 syudou
Oldest song available : Song of Funassyi https://youtu.be/7Qa3t1Om9_s
Most popular : Cute Girlfriend https://youtu.be/oFmup8lxUHw
Most recent : Day by Days https://youtu.be/p00a6QGVjP0